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Short Quiz in Math 9 solves quadratic inequalities

Quiz by Quizalize Premium (Philippines)

Grade 9
Mathematics
Philippines Curriculum: Grades 1-10

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5 questions
Show answers
  • Q1
    6x2 - 54 ≤ 0
    -3 ≤ x ≤ 3
    -3 < x < 3
    x ≤ -3 or x ≥ 3
    x < -3 or x > 3
    30s
    M9AL-If-2
  • Q2
    5x2 + 10x + 7 ≥ 0
    all reals
    no solution
    5 ≤ x ≤ 7
    x ≤ 5 or x ≥ 7
    30s
    M9AL-If-2
  • Q3
    -3x2 + 6x - 3 > 0
    x = 1
    all reals
    all reals
    no solution
    30s
    M9AL-If-2
  • Q4
    8x + 140 > 4x2 hint: put squared term on the LEFT!
    -5 < x < 7
    14 < x < 15
    -3 ≤ x ≤ 12
    -2 < x < 10
    30s
    M9AL-If-2
  • Q5
    2x2 + 9x - 143 < 0
    -11 ≤ x ≤ 6.5
    -11 < x < 6.5
    no solution
    all reals
    30s
    M9AL-If-2

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